Marine DSB antennas are designed with a center frequency of 27MHz, meeting the communication needs of DSB docking stations commonly used by fishing boats and workboats; the 50Ω standard impedance facilitates integration with docking station equipment. The antennas are mostly constructed with high-strength fiberglass rods and corrosion-resistant mounting brackets, suitable for long-term use in marine environments exposed to sunlight and salt spray; the common height is approximately 2.7–2.85m to improve communication stability and effective range.
